Fountain-pen.



Np. 790,596. yPATENTED MAY 23, 1305.v F. E. SHAW. Y FOUNTAIN PEN.APPLICATION FILED JAN. 6, 1905.

` moms/frs UNITED STATES Patented May 23, 1905.

PATENT OFFICE.

FOUNTAIN-PEN.

,SPECIFICATION forming part ofl Letters Patent No. 790,596, dated May23, 1905. y l Application filed January 5, 1905. Serial No. 239,743.

drawings, forming a part of thisspeciiication,

in which similar characters of' reference indicate corresponding partsin all the views.

Figure 1 is a central longitudinal section .through a fountain-penembodying' one form of my invention. Fig. 2 is a similar View, brokenand on a larger scale, showing the rod arranged 1n the plston for inwardmove,-

ment. Figs. 3 and 4 are transverse sections f on the lines 3 3 of Fig.2, the piston-rod being shown in two positions; and Fig. 5 is a similarView on the line 5 5 of Fig. l.

A designates a fountain-pen of' any convenient type, it being shown ashaving a reservoir or main portion 10, carrying a pen 11 and aprotecting-cap 12. In the reservoir operates a piston B, which is shownas comprising a head 13, carrying an elastic body 14C, which may be ofrubber. Interposed between the head and the body is a flexible member ordisk 15, conveniently of leather, and having a loose edge overlappingthe body and filling an annular space between it andv the inner wall ofthe reservoir.

The pressure of the elastic body against the independentlymovable diskinsures a fit which will maintain suction. Through the piston is anopening 16 to receive a piston-rod 17, which has at itsinner end a heador projection 18, provided with an extended surface contacting With theinner end ofl the piston about the opening and preventing the passageof' air or liquid when these elements are in coaction. The piston-rodprojects through an opening 2O in the end of' the reservoir opposite thepen and outside said vreservoir has a head or nger-piece 21, by which itmay be moved. Adjacent to the head, carried either by it or by the rod,is shown an enlargement 22, which may be tapered to lit asiinilarly-inclined wallof' the opening 20, preventingleakage at thispoint when the enlargement is pressed into the opening. From thepistonrod is a lateral projection 23, which preferably extendslongitudinally thereof from a point removed from the head 18 a distancesomewhat greater than the length of the piston into close proximity tothe finger-piece.

`This projection has flattened sides, it being in the present instanceV-shaped, and the opening 16 through the piston has substantially thesame cross-sectional contour, so that when the piston is in engagementwith the projection it will be prevented from rotating thereon and willalso be held from becoming jammed. When the piston is about the portionof the rod between the projections 18 and 23, this being preferablycylindrical, said rod is capable ofI rotation therein, and it may belimited in its' rotary movement by the contact of' the inner end of theprojection 23 with a member or iiange 24, extending outwardly from thepiston-head. This member partly surrounds the rod and limits its'movement to some such angle as ninety degrees One arm of' this contactmember is closely adjacent to the piston-opening, so that when theprojection of the piston-rod is turned into coaction with it the rod maybe moved longitudinally through the pistonopening, while when turnedinthe opposite direction it will be locked against such movement.

When it is desired to fill the pen, the piston being in its inwardposition, the pen end .of the reservoir is immersed in the ink andexhausted and it is to be again filled, the piston is returned to itsactive position by drawing out the piston-rod until the inner extremityof the projection is outside the head.

Then said projection is turned into ooaetion With the contact member atthe side opposite the opening, when the piston will be held againstlongitudinal movement on the rod and may be forced inwardly. The fillingoperation may now be repeated, as has been previously described.

Having thus described my invention, I claim as new and desire to secureby Letters Patentm 1. In a fountain-pen, the combination with areservoir, of a piston operating therein and being provided with anopening, a rod movable through the piston-opening, and a projection fromthe rod at the outer side of the piston, the'piston-opening being ofsucient size to permit the passage of the projection.

2. In` a fountain-pen, the combination with a reservoir, of a pistonoperating therein and being provided With an opening, a rod movablethrough the piston-opening, and a projection from the rod at the outerside of the piston and extending to a point adjacent to the outerextremity of the rod, the pistonopening being of suficient size topermit the passage of the projection.

3. In a fountain-pen, the combination with a reservoir, of a pistonoperating therein, a cylindrical rod movable through the piston, and aflattened projection from the rod which may lie at the outer side of thepiston and may move through said piston.

4. In a fountain-pen. the combination with a reservoir, of a pistonoperating therein and being provided with an opening, a cylindrical rodmovable through the pistou-opening, and a iattened projection from therod at the outer side of the piston, the piston-opening having the samesectional contour as has the rod in a transverse plane through theprojection and permitting the passage of said projection.

5. In a fountain-pen, the combination with a reservoir, of a pistonoperating therein, a

Y rod movable through and rotatable in the piston, a projection from therod at the outer side of the piston, and a contact member carried by thepiston and with which the projection may coact to limit its rotarymovement.

6. In a fountain-pen, the combination with a reservoir, of a pistonoperating therein and being provided with an opening, a rod movablethrough and rotatable in the piston-opening, a projection from the rodat the outer side of the piston, and a contact member situated in closeproximity to one side of the opening and with which the projection maycoact.

In testimony whereof I have signed my n ame to this specilication in thepresence of two su bscribing witnesses.

FRANCIS EMERSON SHAW.

Witnesses:

J. K. SMITH, IRVIN CHASE.

